CN114840033A - Single-shaft tracking type flexible photovoltaic support and photovoltaic power generation system - Google Patents
Single-shaft tracking type flexible photovoltaic support and photovoltaic power generation system Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
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- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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Abstract
The invention relates to a single-shaft tracking type flexible photovoltaic support and a photovoltaic power generation system. The single-shaft tracking type flexible photovoltaic support comprises a driving device and a support body which is vertically arranged; the photovoltaic support is characterized in that an arc-shaped sliding rail mechanism is fixedly connected to one side of the support body, a rotating cross beam is arranged on the arc-shaped sliding rail mechanism and used for anchoring and supporting a flexible inhaul cable of a photovoltaic panel, two ends of the rotating cross beam are supported on the arc-shaped sliding rail mechanism, and the driving device drives the rotating cross beam to rotate along the arc-shaped sliding rail mechanism. The photovoltaic panel follows sun pivoted in-process, and the both ends of rotating the crossbeam support all the time on arc slide rail mechanism to transmit the support body to vertical setting, it can adapt to fixed and balanced between flexible cable and the stand, guarantees the stability of flexible cable at the rotation in-process of flexible photovoltaic support.
Description
Technical Field
The invention relates to the technical field of solar photovoltaic, in particular to a single-shaft tracking type flexible photovoltaic support and a photovoltaic power generation system.
Background
Unlike conventional rigid support systems, which can be configured in a single point configuration and in a small span, such as a 5-6m span, it is difficult to configure a larger span, such as a 20m span, due to cost issues. The flexible photovoltaic support system adopts the flexible inhaul cables instead of the rigid longitudinal beams to support the photovoltaic panels, so that the flexible photovoltaic support system has the advantages of strong spanning capability, simple structure, less material consumption, short construction period, lower investment and the like, and has stronger adaptability to various terrains such as ponds, gullies and the like, so that the flexible photovoltaic support system is rapidly popularized and applied in the engineering field in two years.
With the rapid development of the photovoltaic industry, each large photovoltaic manufacturer also provides a flat single-shaft tracking type photovoltaic support system, and the photovoltaic support system drives a photovoltaic panel to rotate along with the movement of sunlight through a motor and a mechanical driving device, so that the sunlight is ensured to be perpendicular to a photovoltaic panel as much as possible, and the power generation efficiency which is about 30% higher than that of a fixed support system can be obtained. Because the flexible photovoltaic support adopts a cable system to fix the photovoltaic panel, the cable system needs a large tensile force to provide rigidity, and two ends of the cable system are required to be fixed on the upright posts with thrust resistance on two sides, so that the tracking system and the driving mechanism of the conventional rigid support are difficult to adapt to the problems of fixation and balance between the flexible cable and the upright posts.
On the basis of the working stability of the flexible photovoltaic support system, the development of the tracking type flexible photovoltaic support capable of rotating along with the solar rays has important commercial value and is an important trend in the field of new energy power generation. The prior art also tries to solve the driving tracking problem of the flexible photovoltaic system, such as a flexible beam multi-point driving photovoltaic tracking support and a photovoltaic device disclosed in publication number CN110492838A, which still uses the single-axis tracking driving mode of the rigid support system, the photovoltaic tracking support comprises a support main body and a driving assembly, the support main body comprises a plurality of columns arranged side by side at intervals, rotatable oblique beams are arranged on the columns through oblique beam mounting supports, a plurality of supporting cables arranged side by side at intervals are arranged between two adjacent oblique beams, the supporting cables are used for supporting the photovoltaic panel, the supporting cables are connected to the oblique beams, the oblique beams and the oblique beam mounting supports are rotatably connected through a single axis, which makes it difficult to ensure the stability of the oblique beams of the flexible photovoltaic support in the rotating process. Therefore, developing a tracking driving system suitable for the end fixing mode of the flexible inhaul cable and ensuring the stability of the flexible support in the rotating process is an urgent engineering problem to be solved.
Disclosure of Invention
The invention aims to: to the fixed and balanced between flexible cable of the difficult adaptation of prior art's flexible photovoltaic support system and the stand, there is the problem that is difficult to guarantee the flexible cable of flexible photovoltaic support at the stability of rotation in-process, provides a flexible photovoltaic support of single-axis tracking formula and photovoltaic power generation system.
In order to achieve the purpose, the invention adopts the technical scheme that:
a single-shaft tracking type flexible photovoltaic support comprises a driving device and a support body which is vertically arranged;
the photovoltaic support is characterized in that an arc-shaped sliding rail mechanism is fixedly connected to one side of the support body, a rotating cross beam is arranged on the arc-shaped sliding rail mechanism and used for anchoring and supporting a flexible inhaul cable of a photovoltaic panel, two ends of the rotating cross beam are supported on the arc-shaped sliding rail mechanism, and the driving device drives the rotating cross beam to rotate along the arc-shaped sliding rail mechanism.
In this scheme, drive arrangement generally includes power structure, biography power structure and sun tracker, and the sun tracker is prior art, can trail the sun move to and to power structure give-out order, and power structure can provide power, and the biography power structure can transmit power to rotating beam, makes rotating beam produce the rotation. The flexible photovoltaic support of single-axis tracking formula, support body are fixed to be set up, if fixed setting is on the ground etc.. Support body one side fixedly connected with arc slide rail mechanism rotates crossbeam both ends and supports on arc slide rail mechanism and follow under the drive arrangement drive arc slide rail mechanism rotates, and then drives the photovoltaic board on the flexible cable and can rotate, and the photovoltaic board follows sun pivoted in-process promptly, and the both ends of rotating the crossbeam are supported on arc slide rail mechanism all the time to transmit to the support body of vertical setting, it can adapt to fixed and balanced between flexible cable and the stand, guarantees the stability of flexible cable at the rotation in-process of flexible photovoltaic support.
Preferably, drive arrangement includes sector gear dish and horizontal rack, horizontal rack is located the below of sector gear dish, the arcwall face of sector gear dish sets up down, the arcwall face with the upper surface meshing of horizontal rack, the upper portion of sector gear dish is connected rotate the crossbeam, horizontal rack can follow its length direction and remove and drive sector gear dish rotates along its axial, the direction of rotation of sector gear dish with it is unanimous to rotate the crossbeam direction of rotation, the turned angle of sector gear dish with it is unanimous to rotate the crossbeam turned angle.
In this scheme, when fan-shaped gear dish direct fixed connection rotates the crossbeam, the rotation direction of fan-shaped gear dish with it can be unanimous to rotate the crossbeam rotation direction, the turned angle of fan-shaped gear dish with it also can be unanimous to rotate crossbeam turned angle. When horizontal rack removed along its length direction promptly, can drive fan-shaped gear dish takes place the rotation that corresponds along its axial, and then drives and rotate the crossbeam and produce the rotation the same with fan-shaped gear dish, realizes through gear engagement that sharp and arc pivoted conversion and control rotate the crossbeam the same with the rotation of fan-shaped gear dish, and its precision is high, and the control of being convenient for is favorable to adapting to the sun position and changes, and can improve the stability of the flexible cable of flexible photovoltaic support at the rotation in-process.
Preferably, drive arrangement still includes link mechanism, link mechanism includes two vertical connecting rods, a cross connecting rod and two horizontal connecting rods, cross connecting rod is including the first connecting rod and the second connecting rod of cross arrangement, first connecting rod with second connecting rod rigid connection, two the upper end of vertical connecting rod is articulated respectively the both ends of rotating beam, lower extreme are articulated respectively the both ends of first connecting rod, the both ends of second connecting rod are articulated two respectively the corresponding end of horizontal connecting rod, two the other end of horizontal connecting rod is all articulated to be connected fan-shaped gear dish, first connecting rod with rotating beam parallel arrangement, the second connecting rod with fan-shaped gear dish parallel arrangement.
In the above scheme, the two vertical connecting rods, the first connecting rod and the rotating beam form a parallel four-bar structure, and the second connecting rod, the sector gear plate and the two horizontal connecting rods form a parallel four-bar structure. The fan-shaped gear plate rotates to drive the second connecting rod to rotate the same, the second connecting rod rotates to drive the first connecting rod to rotate the same, and the first connecting rod rotates to drive the rotating beam to rotate the same. Two parallel four-bar linkage structure parallel arrangement can realize that the rotation of rotating the crossbeam the same with fan-shaped gear dish, and two parallel four-bar linkage structures form interior outer structure and upper and lower structure, can rational utilization vertical space and side direction space, avoid fan-shaped gear dish rotate with rotate the rotation of crossbeam on arc slide rail mechanism and have the conflict, and then can be with arc slide rail mechanism, fan-shaped gear dish, horizontal rack isovolumic do little, also can guarantee to rotate the stable transmission between crossbeam and the fan-shaped gear dish.
Preferably, the cross connecting rod is in a cross structure, so that the range of the transmission angle can be larger.
Preferably, the horizontal rack is connected with a transverse transmission connecting rod, the transverse transmission connecting rod is connected with a motor driving system, the motor driving system can control the transverse transmission connecting rod to drive the horizontal rack to move along the length direction of the transverse transmission connecting rod, the horizontal rack can be controlled to move linearly accurately, and therefore the stability and the accuracy of the flexible cable of the flexible photovoltaic support in the rotating process can be improved.
Preferably, a support frame is arranged below the horizontal rack, a linear slide rail is arranged above the support frame, a slide block is arranged below the horizontal rack, the linear slide rail supports the slide block, and the slide block can slide along the linear slide rail.
The horizontal rack can be further controlled to do linear motion through the sliding block and the linear sliding rail, so that the stability and the accuracy of the flexible cable of the flexible photovoltaic support in the rotating process can be improved. And the support frame can support the transverse transmission connecting rod, so that the transverse transmission connecting rod is prevented from being downwarped, and the influence on the linear motion of the horizontal rack can be avoided. And the support frame can be distinguished from the support body and set up on the ground etc. promptly support frame, slide rail, slider, horizontal rack, fan-shaped toothed disc, link mechanism can form the support to the crossbeam that rotates. According to the scheme, not only is stable transmission of linear movement rotating arc-shaped rotation realized, but also more stable rotation support can be carried out on the rotating cross beam, and the stability and the accuracy of the flexible cable of the flexible photovoltaic support in the rotating process can be further improved.
Preferably, arc slide rail mechanism is two relative arc slide rails that set up, two the opposite side of arc slide rail is provided with the spout, the both ends of rotating the crossbeam are located two in the spout of arc slide rail, the tip of rotating the crossbeam sets up in the spout, slides in the spout, and then realizes rotating the rotation of crossbeam, and it is effectual to rotating the radial restriction of crossbeam, and the support nature is good, is favorable to rotating the stable rotation of crossbeam. And the rotating beam can be taken out from the gap between the two arc-shaped sliding rails, so that the replacement is convenient.
Preferably, the support body includes crossbeam and two stands, the crossbeam is connected in two between the stand, the stand is kept away from one side of photovoltaic board is equipped with the bracing, stable in structure, the effort of resisting flexible cable that can be better.
The utility model provides a photovoltaic power generation system, is including two relative settings as above-mentioned single-axis tracking formula flexible photovoltaic supports, and the anchor has flexible cable between the relative rotating beam, be provided with a plurality of photovoltaic boards on the flexible cable.
Through adopting above-mentioned single-axis tracking formula flexible photovoltaic support to anchor there is the flexible cable, and then support a plurality of photovoltaic boards, it can adapt to fixed and balanced between flexible cable and the stand, guarantee the stability of flexible cable of flexible photovoltaic support at the rotation in-process, make and to set up the photovoltaic board and follow the sun rotation under the flexible cable drives, because the direct projection state of sunlight has been guaranteed to the single-axis tracking function, unit photovoltaic panel's generated energy has effectively been improved, can improve 25-40% than flexible fixed bolster according to current research data generated energy, and effectively utilized flexible photovoltaic support system mounting structure simple, the strong advantage of topography adaptability, and realized tracking the rotation of sun unipolar based on flexible photovoltaic system, effectively reduced mounting system's material quantity and unit cost.
Preferably, same one row flexible photovoltaic support of single-axis tracking formula horizontal rack connects same transverse transmission connecting rod, every a motor drive system is connected to the transverse transmission connecting rod, because this scheme adopts horizontal rack rectilinear movement to drive fan-shaped gear dish and rotates, rethread link mechanism rotate the crossbeam with two parallel four-bar linkage structures that fan-shaped gear dish formed for can come the same row of simultaneous control through a transverse transmission connecting rod and a motor drive system the rotation of the rotation crossbeam of flexible photovoltaic support of single-axis tracking formula, its simple structure, and control convenience, control accuracy height, the more direct projection state of assurance sunlight that more enough is more accurate improves the generated energy.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the single-shaft tracking type flexible photovoltaic support, in the process that the photovoltaic panel rotates along with the sun, two ends of the rotating cross beam are always supported on the arc-shaped sliding rail mechanism and are transmitted to the support body which is vertically arranged, the support can adapt to fixation and balance between the flexible inhaul cable and the upright column, and the stability of the flexible inhaul cable of the flexible photovoltaic support in the rotating process is guaranteed.
2. Adopt the horizontal rack with the gear engagement of sector gear dish realizes sharp and arc pivoted conversion and control to rotate the crossbeam the same with the rotation of sector gear dish, and its precision is high, and the control of being convenient for is favorable to adapting to the sun position and changes, and can improve the stability of flexible cable of flexible photovoltaic support at the rotation in-process.
3. Through link mechanism the rotation crossbeam with fan-shaped gear dish forms two parallel four-bar linkage structure parallel arrangement, can realize that the rotation crossbeam is the same with the rotation of fan-shaped gear dish, and two parallel four-bar linkage structures form inner and outer structure and upper and lower structure, can rational utilization vertical space and side direction space, the rotation of avoiding fan-shaped gear dish has the conflict with the rotation of rotating the crossbeam on arc slide rail mechanism, and then can do the isovolumic little with arc slide rail mechanism, fan-shaped gear dish, horizontal rack, also can guarantee to rotate the stable transmission between crossbeam and the fan-shaped gear dish.
4. The horizontal rack can be controlled to do linear motion through the transverse transmission connecting rod, the sliding block and the linear sliding rail, the supporting frame can support the transverse transmission connecting rod, the transverse transmission connecting rod is prevented from being downwarped, the stability and the accuracy of the flexible cable of the flexible photovoltaic support in the rotating process can be improved, the rotating cross beam can be stably rotatably supported, and the stability and the accuracy of the flexible cable of the flexible photovoltaic support in the rotating process can be further improved.
5. According to the photovoltaic power generation system, the flexible inhaul cables are anchored by adopting the single-shaft tracking type flexible photovoltaic support, so that the photovoltaic panels are supported, the fixing and balancing between the flexible inhaul cables and the stand columns can be adapted, the stability of the flexible inhaul cables of the flexible photovoltaic support in the rotating process is ensured, the photovoltaic panels can be arranged to rotate along with the sun under the driving of the flexible inhaul cables, the direct irradiation state of sunlight is ensured due to the single-shaft tracking function, the power generation capacity of a unit photovoltaic panel is effectively improved, and the material consumption and the unit manufacturing cost of the support system are reduced.
6. The photovoltaic power generation system can simultaneously control the rotation of the rotating beams of the single-shaft tracking type flexible photovoltaic supports in the same column through the transverse transmission connecting rod and the motor driving system, has a simple structure, is convenient to control, has high control precision, can more accurately ensure the direct irradiation state of sunlight, and improves the power generation capacity.
Drawings
Fig. 1 is a schematic structural view of a single-axis tracking flexible photovoltaic support in example 1;
fig. 2 is a front view of a single axis tracking flexible photovoltaic mount of example 1;
fig. 3 is a side view of a single axis tracking flexible photovoltaic mount of example 1;
FIG. 4 is a schematic configuration diagram of a link mechanism in embodiment 1;
fig. 5 is a schematic layout of a single-axis tracking flexible photovoltaic support on one side of a photovoltaic power generation system.
Icon: 1-upright column; 2-diagonal bracing; 3-a cross beam; 4-arc slide rail mechanism; 41-arc slide rail; 5-rotating the beam; 6-flexible inhaul cable; 7-a photovoltaic panel; 81-vertical connecting rod; 82-cross link; 821-a first link; 822-a second link; 83-horizontal link; 84-sector gear plate; 85-horizontal rack; 9-a slide block; 10-a linear slide rail; 11-a support frame; 12-a gear disc turret; 13-a transverse drive link; 14-motor drive system.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment provides a single-shaft tracking type flexible photovoltaic support, which is shown in fig. 1 and comprises a driving device and a support body arranged vertically;
support body one side fixedly connected with arc slide rail mechanism 4, be provided with rotating beam 5 on the arc slide rail mechanism 4, rotating beam 5 is used for the anchor to support flexible cable 6 of photovoltaic board 7, rotating beam 5 both ends support in arc slide rail mechanism 4, the drive arrangement drive rotating beam 5 is followed arc slide rail mechanism 4 rotates.
In this scheme, the flexible photovoltaic support of single-axis tracking formula, the support body is fixed to be set up, if fixed setting is on the ground first-class. The existing support body is provided with a single vertical upright post 1 and is inclined to pull away from one side of the photovoltaic panel 7, but the structural stability is poor. In this embodiment, as shown in fig. 1, the bracket body includes a cross beam 3 and two columns 1, the cross beam 3 is connected between the two columns 1, and an inclined strut 2 is arranged on one side of the column 1 away from the photovoltaic panel 7, so that the structure is relatively stable, and the arc-shaped sliding rail mechanism 4 can be better arranged and supported. The position of the beam 3 can be selected, for example, the beam 3 is fixedly connected between the tops or the bottoms. The rotating beam 5 is used for anchoring flexible cables 6 supporting the photovoltaic panel 7, the number of the flexible cables 6 arranged on the rotating beam 5 is generally two but can be larger than two, the two flexible cables 6 are arranged at the two ends of the rotating beam 5, but the rotation of the rotating beam 5 on the arc-shaped sliding rail mechanism 4 should not be interfered, if the flexible cables 6 are arranged at the four-point positions at the two ends of the rotating beam 5, and cable anchors are arranged at the connecting parts of the rotating beam 5 and the flexible cables 6 and used for pre-tightening and fixing the flexible cables 6. The photovoltaic panel 7 assembly is installed on the flexible inhaul cable 6 in a crossing mode through a fixing fastener.
In this scheme, drive arrangement generally includes power structure, biography power structure and sun tracker, and the sun tracker is prior art, can trail the sun move to and send the instruction to power structure for power structure provides power, and the biography power structure can transmit power to rotating beam 5, makes rotating beam 5 produce the rotation, and power structure and biography power structure all can adopt current structure.
This scheme passes through support body one side fixedly connected with arc slide rail mechanism 4, rotates 5 both ends of crossbeam and supports on arc slide rail mechanism 4 and follow under the drive of drive arrangement the rotation of arc slide rail mechanism 4 and following the sun, and then drive photovoltaic board 7 on the flexible cable 6 and can follow the sun and rotate, promptly under current support body, current drive arrangement's prerequisite, the photovoltaic board 7 of this embodiment follows the sun pivoted in-process, support all the time on arc slide rail mechanism 4 because of the both ends of rotating crossbeam 5 to transmit to the support body of vertical setting, it can adapt to fixed and balanced between flexible cable 6 and the stand 1, guarantee the stability of flexible cable 6 of flexible photovoltaic support at the rotation in-process. And the support body that crossbeam 3, two stands 1 and bracing 2 in the cooperation figure 1 are constituteed can make the flexible cable 6 of flexible photovoltaic support better at the stability of rotation in-process.
In this scheme, arc slide rail mechanism 4 can adopt whole circular slide rail, and the both ends of rotating beam 5 need set up in advance in circular slide rail or on circular slide rail, can form the cooperation form of vice or similar slide rail of guide rail and slider, as shown in fig. 1, and the both ends of rotating beam 5 remove in arc slide rail mechanism 4. The arc-shaped slide rail mechanism 4 may also adopt other forms, as shown in fig. 1-2, the arc-shaped slide rail mechanism 4 is two arc-shaped slide rails 41 arranged oppositely, sliding grooves are arranged on opposite sides of the two arc-shaped slide rails 41, and two ends of the rotating beam 5 are located in the sliding grooves of the two arc-shaped slide rails 41, which may be replaced by a guide rail pair form, and compared with the case of adopting the whole circular slide rail, the two arc-shaped slide rails 41 arranged oppositely in fig. 1 enables the rotating beam 5 to be taken out from a gap between the two arc-shaped slide rails 41, which is convenient for replacement. Certainly, the arc-shaped slide rail mechanism 4 can realize the rotation guide of the rotating beam 5, has good radial limiting effect on the rotating beam 5, has good formed supporting performance, and is beneficial to the stable rotation of the rotating beam 5; arc slide rail mechanism 4 can also be used for strengthening the connection between crossbeam 3 and two stands 1, as can be seen from fig. 2, every arc slide rail 41 is connected with a stand 1 and crossbeam 3, can strengthen the intensity and the stability of support body, and arc slide rail mechanism 4 can the synergism with the support body, further improves the stability and the accuracy of flexible cable 6 of flexible photovoltaic support at the rotation in-process.
As shown in fig. 1 to 4, the present embodiment employs a novel driving device, which includes a fan-shaped gear plate 84 and a horizontal rack 85, wherein the horizontal rack 85 is located below the fan-shaped gear plate 84, an arc surface of the fan-shaped gear plate 84 is disposed downward, and the arc surface is engaged with an upper surface of the horizontal rack 85, as shown in fig. 2 and 3. The upper portion of sector gear dish 84 is connected crossbeam 5 rotates, horizontal rack 85 can remove and drive along its length direction sector gear dish 84 rotates along its axial, sector gear dish 84 the direction of rotation with crossbeam 5 direction of rotation is unanimous, sector gear dish 84 the turned angle with crossbeam 5 turned angle is unanimous rotates. Such as: when the sector gear plate 84 is directly and fixedly connected with the rotating beam 5, the rotating direction of the sector gear plate 84 and the rotating direction of the rotating beam 5 can be consistent, and the rotating angle of the sector gear plate 84 and the rotating angle of the rotating beam 5 can also be consistent. When horizontal rack 85 removed along its length direction promptly, can drive fan-shaped gear dish 84 takes place the rotation that corresponds along its axial, and then drives and rotate crossbeam 5 and produce the rotation the same with fan-shaped gear dish 84, realize through gear engagement that sharp and arc pivoted conversion and control rotate crossbeam 5 the same with fan-shaped gear dish 84's rotation, its precision is high, and the control of being convenient for, be favorable to adapting to the sun position and change, and can improve the stability of flexible cable 6 at the rotation in-process of flexible photovoltaic support.
Of course, instead of directly fixing the segment gear disk 84 to the rotary traverse 5, it is also possible to realize it by means of an intermediate transmission. Such as the one provided in fig. 2-4, i.e. the drive means further comprises a linkage mechanism, the linkage comprises two vertical links 81, one cross link 82 and two horizontal links 83, the cross link 82 includes a first link 821 and a second link 822 arranged crosswise, the first connecting rod 821 and the second connecting rod 822 are rigidly connected, the upper ends of the two vertical connecting rods 81 are respectively hinged with two ends of the rotating beam 5, the lower ends of the two vertical connecting rods are respectively hinged with two ends of the first connecting rod 821, two ends of the second connecting rod 822 are respectively hinged with corresponding ends of the two horizontal connecting rods 83, the other ends of the two horizontal connecting rods 83 are respectively hinged with the sector gear disc 84, the first link 821 is disposed in parallel with the rotating beam 5, and the second link 822 is disposed in parallel with the sector gear plate 84.
In the above solution, the two vertical connecting rods 81, the first connecting rod 821 and the rotating beam 5 form a parallel four-bar linkage, and the second connecting rod 822, the sector gear plate 84 and the two horizontal connecting rods 83 form a parallel four-bar linkage. The rotation of the sector gear plate 84 can drive the second connecting rod 822 to rotate in the same way, the second connecting rod 822 rotates to drive the first connecting rod 821 to rotate in the same way, and the first connecting rod 821 rotates to drive the rotating beam 5 to rotate in the same way. That is, the initial state of the rotating beam 5 and the sector gear plate 84 may be set by the configuration of the cross link 82, for example, the initial state of the first link 821 is horizontal, that is, the initial state of the rotating beam 5 is also horizontal, which can be set adaptively according to the sun conditions of different regions. Such as: the cross connecting rod 82 is in a cross structure, so that the range of the transmission angle can be larger. In this embodiment, the cross link 82 is provided as an integrally formed member, which provides higher stability. However, the cross link 82 is configured to adjust the angle between the first link 821 and the second link 822 and to achieve angle fixation, which is more adaptive.
Two parallel four-bar linkage structure parallel arrangement, can realize that the rotation of rotating crossbeam 5 and fan-shaped gear dish 84 is the same, and two parallel four-bar linkage structures form interior outer structure and upper and lower structure, can rational utilization vertical space and side direction space, avoid fan-shaped gear dish 84 rotate with rotate crossbeam 5 and have the conflict in the rotation of arc slide rail mechanism 4, and then can be with arc slide rail mechanism 4, fan-shaped gear dish 84, horizontal rack 85 is isometric to do for a short time, also can guarantee to rotate the stable transmission between crossbeam 5 and the fan-shaped gear dish 84. Namely, the conventional parallel four-bar linkage structure solves the driving problem of motion in a plane, the double parallel four-bar linkage adopted by the invention not only effectively utilizes the advantages of the parallel four-bar linkage in the aspect of rotation transmission, but also realizes the spatial plane dislocation of the sector gear disc 84 and the rotating beam 5 through the reasonable combination of the two parallel four-bar linkages, thereby avoiding the problem of position interference between a horizontal transmission rod and the end upright post 1 in the same plane caused by the conventional parallel four-bar linkage, as shown in fig. 3.
The patent application of publication No. CN110492838A requires motors to drive the push-pull rods at both ends of each row of brackets, so more driving motors and their associated control systems are required; the multi-row photovoltaic panel 7 adopts the bracket with the driving device, can be driven by a group of driving motors at two ends, and saves the investment of driving power and a motion control system; the driving rod of the patent application with the publication number CN110492838A is located at one side of the photovoltaic panel 7, and when the driving rod drives the photovoltaic panel 7 to move, an unbalanced force is generated at the rotation center of the beam 3 at the top end of the upright post 1, which is unfavorable for the stress of the flexible photovoltaic support; according to the invention, the rotating beam 5 is driven by the connecting rod to move in the arc-shaped sliding rail 41, so that the load can be uniformly transmitted to the end support of the flexible inhaul cable 6, a remarkable unbalanced thrust effect cannot be generated, and the support is more stable.
As shown in fig. 1 to 4, the horizontal rack 85 is connected with the transverse transmission connecting rod 13, the transverse transmission connecting rod 13 is connected with the motor driving system 14, the motor driving system 14 can control the transverse transmission connecting rod 13 to drive the horizontal rack 85 to move along the length direction of the transverse transmission connecting rod 13, and the horizontal rack 85 can be controlled to do linear motion more accurately, so that the stability and accuracy of the flexible cable 6 of the flexible photovoltaic support in the rotating process can be improved. The motor driving system 14 adopts a rotating motor or a linear motor, the driving system is provided with a necessary speed reducer, an eccentric wheel mechanism, a unidirectional motion forming mechanism and the like, and the automatic control system can coordinate the motion steps between the motors at two ends of each row of photovoltaic panels 7 or among multiple motors required by a power plant multi-row support string by being provided with a solar tracker and an automatic control system.
A support frame 11 is arranged below the horizontal rack 85, a linear slide rail 10 is arranged above the support frame 11, a slide block 9 is arranged below the horizontal rack 85, the slide block 9 is supported by the linear slide rail 10, and the slide block 9 can slide along the linear slide rail 10. The linear slide rail 10 and the slide block 9 may be in the form of a guide rail pair, or the slide block 9 may be directly slid in the linear slide rail 10. The horizontal rack 85 can be further controlled to do linear motion through the sliding block 9 and the linear sliding rail 10, so that the stability and the accuracy of the flexible inhaul cable 6 of the flexible photovoltaic support in the rotating process can be improved. And the support frame 11 can support the transverse transmission connecting rod 13, so that the transverse transmission connecting rod 13 is prevented from being downwarped, and the influence on the linear motion of the horizontal rack 85 can be avoided. And the support frame 11 can be arranged on the ground or the like different from the support body, namely the support frame 11, the linear slide rail 10, the slide block 9, the horizontal rack 85, the sector gear disc 84 and the link mechanism can form a support for the rotating beam 5. Above-mentioned scheme has not only realized rectilinear movement changes arc pivoted and has stabilized the transmission, can also carry out more stable rotation support to the crossbeam that rotates 5, can further improve the stability and the accuracy of flexible cable 6 at the rotation in-process of flexible photovoltaic support.
The embodiment provides a flexible photovoltaic support of unipolar tracking formula, not only has the advantage of flexible photovoltaic support simple structure, terrain adaptability, still has the advantage that photovoltaic tracking support can adjust 7 inclinations of photovoltaic board in order to improve the generated energy according to the sun ray. The embodiment provides a set of tip mounting system of taking arc slide rail 41, can guarantee the stress balance and the stability of flexible cable 6 system at the in-process that guide photovoltaic board 7 takes place rotary motion. The embodiment provides a mechanical mechanism for driving the rotating beam 5 to rotate through a specific link mechanism, which comprises a vertical link 81, a horizontal link 83, a cross link 82, a sector gear disc 84, a horizontal rack 85 and the like. The embodiment provides a set of functions of driving the photovoltaic panels 7 in multiple rows to be linked to track the sun and improve the power generation capacity through the motor driving system 14, the transverse transmission connecting rod 13, the linear sliding rail 10 and the sliding block 9. The flexible inhaul cable 6 supporting system provided by the embodiment is fixed on the rotating cross beam 5, the load of the photovoltaic panel 7 is effectively transmitted to the arc-shaped sliding rail 41, and the arc-shaped sliding rail 41 is fixed on a stable solid system composed of the upright column 1, the inclined strut 2 and the cross beam 3, so that the flexible inhaul cable 6 supporting system has higher reliability and practicability. The embodiment also provides a set of novel mechanical driving device mainly based on connecting rod transmission, so that the rotating beam 5 is guided to drive the flexible inhaul cable 6 on the rotating beam and the photovoltaic power generation system to rotate in a single shaft. This embodiment has still provided one set and has driven multirow photovoltaic board 7 through single motor drive and produce the novel drive mode of pursuing the sun motion.
Example 2
The present embodiment provides a single-axis tracking flexible photovoltaic support, which is more specific than the embodiments, see fig. 1-4.
As shown in fig. 1, the present embodiment provides a single-axis tracking type flexible photovoltaic support, which is disposed at two ends of each row of photovoltaic panels 7 supporting a flexible cable 6, and specifically includes a support body, the support body has two columns 1, two inclined struts 2, a cross beam 3 and two arc-shaped slide rails 41 disposed oppositely, each inclined strut 2 is disposed at an outer side of the corresponding column 1, the cross beam 3 is connected between tops of the two columns 1, the two arc-shaped slide rails 41 disposed oppositely are disposed at inner sides of the two columns 1, and the arc-shaped slide rails 41 are connected to the columns 1 and the cross beam 3 at the same time, the opposite sides of the two arc-shaped slide rails 41 disposed oppositely are provided with arc-shaped slide grooves, the arc-shaped slide grooves are disposed with a rotating cross beam 5 capable of rotating along the arc-shaped slide rails 41, during a specific installation process, the columns 1 and the inclined struts 2 can be fixed first, then the cross beam 3 and the arc-shaped slide rails 41 are fixed, the rotating cross beam 5 slides into the arc-shaped slide grooves between ends of the two arc-shaped slide rails 41, the rotating beam 5 can be placed after the arc-shaped sliding rail 41 on one side is installed firstly, the arc-shaped sliding rail 41 on the other side is fixed, and the rotating beam 5 is welded at the end part of the arc-shaped sliding rail 41 or can be detachably connected with the stop block to avoid the abnormal falling of the rotating beam 5.
As shown in fig. 2 to 4, the force transmission mechanism of the driving device according to the embodiment of the present invention includes two vertical links 81, a cross-shaped link, two horizontal links 83, a sector gear plate 84, a horizontal rack 85, and the like, wherein one end of each of the two vertical links 81 is hinged to the two sides of the quartering point of the rotating beam 5, and the other end is located below the side of the rotating beam 5 and hinged to the two beam ends of the first horizontally disposed link 821 of the cross-shaped link, and the cross-shaped link is a rigid integral component. One end of each of the two horizontal links 83 is hinged to two set points of the sector gear plate 84, and the other end is hinged to a corresponding end point of the upper and lower end points of the vertically arranged second link 822 of the cross-shaped link. The lower end of the sector gear plate 84 is an arc-shaped surface, is supported on the horizontal rack 85 through tooth-shaped occlusion, and is connected with a set rotating central pin shaft through the upper end of the gear plate rotating frame 12. The horizontal rack 85 is installed on the linear slide rail 10 through the slide block 9, and the linear slide rail 10 is installed on the slide rail support frame 11. The lower ends of the slide rail supporting frame 11 and the gear disc rotating frame 12 are directly fixed on the ground in a proper mode. Thus, when the horizontal rack 85 slides, the sector gear plate 84 rotates around the pin at the upper end of the gear plate rotating frame 12, so as to drive the horizontal connecting rod 83 to rotate, drive the cross-shaped connecting rod to rotate in the same way, further drive the two vertical connecting rods 81 to perform a dislocation, and drive the rotating beam 5 to rotate along the arc-shaped sliding rail 41 in the same way as the sector gear plate 84.
The two ends of the rotating beam 5 are specially provided with stay cable anchoring points, the two flexible stay cables 6 are fixed on the rotating beam 5 through the anchoring points, and the photovoltaic panel 7 is connected with the two flexible stay cables 6 through special fasteners. On 6 both ends of flexible cable were fixed in the rotating beam 5 on the stand 1 of both sides respectively, can adopt the steel strand wires cable in the implementation process, the cable overspeed device tensioner who uses current engineering world generally to stretch out flexible cable 6 with anchor assembly and target in place the after-fixing, then according to setting for the series photovoltaic board 7 of interval installation electricity generation needs on flexible cable 6.
As shown in fig. 5, the horizontal racks 85 of the single-axis tracking flexible photovoltaic supports on the same side can be connected in series by the same transverse transmission link 13, and then connected to the same motor drive system 14, the motor drive system 14 includes a motion coordination mechanism, a sun tracker, and an automatic control system, the motion coordination mechanism includes a power structure and a force transmission structure, the force transmission structure includes a sector gear plate 84, a horizontal rack 85, and a link mechanism, so that the motor can be controlled to produce the required rotation according to the movement of the sun relative to the photovoltaic panel 7, therefore, the transverse transmission connecting rod 13 and the force transmission structure can drive the rotating beam 5 of each row of flexible photovoltaic supports to generate a required corner, one end of each row of flexible photovoltaic supports driven by one set of motor driving system 14 is driven to generate sun tracking motion, and the power generation efficiency of a photovoltaic power generation system used by the flexible photovoltaic supports is greatly improved.
Example 3
This embodiment provides a photovoltaic power generation system, adopts two to be listed as in embodiment 1 or 2 the flexible photovoltaic support of unipolar tracking formula, be one of them one as shown in fig. 5 the flexible photovoltaic support of unipolar tracking formula, the anchor has flexible cable 6 between relative rotating beam 5, be provided with a plurality of photovoltaic boards 7 on the flexible cable 6.
Through adopting above-mentioned single-axis tracking formula flexible photovoltaic support to anchor there is flexible cable 6, and then support a plurality of photovoltaic boards 7, it can adapt to the fixed and balanced between flexible cable 6 and the stand 1, guarantee the stability of flexible cable 6 of flexible photovoltaic support at the rotation in-process, make and to set up photovoltaic board 7 and follow the sun rotation under flexible cable 6 drives, because the direct projection state of sunlight has been guaranteed to the single-axis tracking function, the generated energy of unit photovoltaic panel has effectively been improved, can improve the generated energy 25-40% than flexible fixed bolster according to current research data, and effectively utilized flexible photovoltaic support system mounting structure simple, the advantage that topography adaptability is strong, and realized tracking the rotation of sun unipolar based on flexible photovoltaic system, effectively reduced the material quantity and the unit cost of braced system.
As shown in fig. 5, in this embodiment, the horizontal rack 85 of the single-axis tracking flexible photovoltaic support in the same row may be connected to the same transverse transmission connecting rod 13, and each transverse transmission connecting rod 13 is connected to one motor driving system 14, because this scheme adopts a linear movement of the horizontal rack 85 to drive the sector gear disc 84 to rotate, and then the connecting rod mechanism is used to rotate the cross beam 5 and the two parallel four-bar structures formed by the sector gear disc 84, so that the rotation of the rotating cross beam 5 of the single-axis tracking flexible photovoltaic support in the same row can be controlled simultaneously through one transverse transmission connecting rod 13 and one motor driving system 14, and the structure is simple, and the control is convenient, the control precision is high, and the direct irradiation state of sunlight can be more accurately ensured, and the power generation amount is increased.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A single-shaft tracking type flexible photovoltaic support is characterized by comprising a driving device and a support body which is vertically arranged;
support body one side fixedly connected with arc slide rail mechanism (4), be provided with on arc slide rail mechanism (4) and rotate crossbeam (5), it is used for anchor flexible cable (6) of supporting photovoltaic board (7) to rotate crossbeam (5), it supports in to rotate crossbeam (5) both ends arc slide rail mechanism (4), the drive arrangement drive rotate crossbeam (5) and follow arc slide rail mechanism (4) rotate.
2. The single-shaft tracking flexible photovoltaic bracket according to claim 1, characterized in that the driving device comprises a sector gear plate (84) and a horizontal rack (85), the horizontal rack (85) is located below the sector gear plate (84), an arc surface of the sector gear plate (84) is arranged downward, the arc surface is meshed with an upper surface of the horizontal rack (85), the upper part of the sector gear plate (84) is connected with the rotating beam (5), the horizontal rack (85) can move along the length direction and drive the sector gear plate (84) to rotate along the axial direction, the rotating direction of the sector gear plate (84) is consistent with the rotating direction of the rotating beam (5), and the rotating angle of the sector gear plate (84) is consistent with the rotating angle of the rotating beam (5).
3. The single-shaft tracking flexible photovoltaic bracket according to claim 2, characterized in that the driving device further comprises a link mechanism, the link mechanism comprises two vertical links (81), one cross link (82) and two horizontal links (83), the cross link (82) comprises a first link (821) and a second link (822) which are arranged in a cross manner, the first link (821) and the second link (822) are rigidly connected, the upper ends of the two vertical links (81) are respectively hinged with two ends of the rotating beam (5), the lower ends of the two vertical links are respectively hinged with two ends of the first link (821), the two ends of the second link (822) are respectively hinged with corresponding ends of the two horizontal links (83), the other ends of the two horizontal links (83) are respectively hinged with the fan-shaped gear disc (84), the first link (821) and the rotating beam (5) are arranged in parallel, the second connecting rod (822) and the sector gear disc (84) are arranged in parallel.
4. The single-axis tracking flexible photovoltaic mount according to claim 3, wherein the cross-link (82) is a cross-shaped structure.
5. The single-shaft tracking flexible photovoltaic bracket according to any one of claims 2 to 4, characterized in that the horizontal rack (85) is connected with a transverse transmission connecting rod (13), the transverse transmission connecting rod (13) is connected with a motor driving system (14), and the motor driving system (14) can control the transverse transmission connecting rod (13) to drive the horizontal rack (85) to move along the length direction of the transverse transmission connecting rod (13).
6. The single-shaft tracking flexible photovoltaic bracket according to claim 5, characterized in that a support frame (11) is arranged below the horizontal rack (85), a linear sliding rail (10) is arranged above the support frame (11), a sliding block (9) is arranged below the horizontal rack (85), the linear sliding rail (9) is supported by the linear sliding rail (10), and the sliding block (9) can slide along the linear sliding rail (10).
7. The single-shaft tracking flexible photovoltaic bracket according to claim 5, characterized in that the arc-shaped sliding rail mechanism (4) is two oppositely arranged arc-shaped sliding rails (41), sliding grooves are arranged on opposite sides of the two arc-shaped sliding rails (41), and two ends of the rotating beam (5) are positioned in the sliding grooves of the two arc-shaped sliding rails (41).
8. The single-axis tracking flexible photovoltaic support according to claim 7, characterized in that the support body comprises a cross beam (3) and two uprights (1), the cross beam (3) is connected between the two uprights (1), and a diagonal brace (2) is arranged on one side of the uprights (1) away from the photovoltaic panel (7).
9. A photovoltaic power generation system, characterized by comprising two rows of oppositely arranged single-shaft tracking flexible photovoltaic supports according to any one of claims 5 to 8, wherein a flexible cable (6) is anchored between the opposite rotating beams (5), and a plurality of photovoltaic panels (7) are arranged on the flexible cable (6).
10. Photovoltaic power generation system according to claim 9, characterized in that the horizontal racks (85) of the single-shaft tracking flexible photovoltaic supports of the same column are connected to the same transverse transmission linkage (13), each transverse transmission linkage (13) being connected to a motor drive system (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210395749.5A CN114840033A (en) | 2022-04-15 | 2022-04-15 | Single-shaft tracking type flexible photovoltaic support and photovoltaic power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210395749.5A CN114840033A (en) | 2022-04-15 | 2022-04-15 | Single-shaft tracking type flexible photovoltaic support and photovoltaic power generation system |
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| CN114840033A true CN114840033A (en) | 2022-08-02 |
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| CN202210395749.5A Pending CN114840033A (en) | 2022-04-15 | 2022-04-15 | Single-shaft tracking type flexible photovoltaic support and photovoltaic power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115833719A (en) * | 2022-10-09 | 2023-03-21 | 浙江锐博科技工程有限公司 | TPO/PVC flexible roof non-penetrating photovoltaic support system |
-
2022
- 2022-04-15 CN CN202210395749.5A patent/CN114840033A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115833719A (en) * | 2022-10-09 | 2023-03-21 | 浙江锐博科技工程有限公司 | TPO/PVC flexible roof non-penetrating photovoltaic support system |
| CN115833719B (en) * | 2022-10-09 | 2023-11-14 | 锐博新能源集团有限公司 | TPO/PVC flexible roof non-penetrating type photovoltaic support system |
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